• CERAWEEK 2025 | March 10-14, 2025
  • CERAWEEK
  • March 10 - 14, 2025

Leah Ellis

Sublime Systems

Chief Executive Officer & Co-Founder

Leah Ellis is the CEO and co-founder of Sublime Systems, a company revolutionizing the cement industry through its breakthrough process to produce low-carbon cement. With a pilot plant in Somerville, Massachusetts capable of producing 100 tons of decarbonized cement annually, Sublime recently secured a $40 million series A funding to drive growth. Leah and her co-founder, Yet-Ming Chiang, developed the technology while she was an NSERC/Banting Postdoctoral Fellow at the MIT Department of Materials Science and Engineering. Leah holds a PhD in chemistry from Dalhousie University, where she worked with Professor Jeff Dahn on lithium-ion battery optimization in partnership with 3M and Tesla. Leah is an Activate Boston Entrepreneurial Fellow and has been recognized as one of MIT Technology Review's 35 Innovators under 35.

Sessions With Leah Ellis

Tuesday, 19 March

  • 02:30pm - 03:00pm (CST) / 19/mar/2024 07:30 pm - 19/mar/2024 08:00 pm

    Sublime Systems | True Zero Manufacturing for Low-carbon Cement

    Sublime Systems is on a mission to have a swift, massive and enduring impact on global CO2 emissions by decarbonizing cement. This session will detail Sublime’s fully electrified, "true zero” approach to cement manufacturing, which replaces the industry’s legacy fossil-fueled kilns and limestone feedstock with an ambient temperature electrochemical process that produces Sublime CementTM as a drop-in replacement for ordinary portland cement in concrete. 

    Watch Now
  • 04:30pm - 05:10pm (CST) / 19/mar/2024 09:30 pm - 19/mar/2024 10:10 pm

    ARPA-E: Spotlight on energy startups
    Innovation & Technology

    The DOE’s Advanced Research Projects Agency-Energy (ARPA-E) invests in innovative, early-stage ideas from academia, private industry, national labs, start-up companies and small businesses. How are some of the agency’s brightest, emerging energy startups with innovations around emissions monitoring, energy storage and zero-carbon cement being set up for success? How do some of their challenges compare? To help them scale, what financial and non-financial help do these companies need next?